Iron versus climate change

Metal deposits can promote the growth of ocean algae that gobble greenhouse gas

By Roberta Kwok, 11:43 AM August 9, 2012



In 2004, a team of scientists traveled by ship to an enormous whirlpool in the ocean near Antarctica. Their goal was to find out if a risky strategy for fighting climate change might work. The plan: Dump iron in the water to trigger the growth of algae. Then let the algae soak up carbon dioxide. This gas that contributes to global warming. Finally, watch to see if the organisms drift to the seafloor.


This iron fertilization of algae appears to have been successful. That's what an internatio...

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